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std::string to float or double
...t generally say they come with a performance penalty, i think. Think about what happens when just before it you have a cin >> num;. The user would have to type very quickly (rly jon skeet like) to ever note the milliseconds lexical_cast is slower :) That said, i believe there are tasks where l...
Create an empty data.frame
...you do df[NA,] this will affect the index as well (which is unlikely to be what you want), I would instead use df[TRUE,] = NA; however notice that this will overwrite the original. You will need to copy the dataframe first copy_df = data.frame(df) and then copy_df[TRUE,] = NA
–...
What is a good Java library to zip/unzip files? [closed]
I looked at the default Zip library that comes with the JDK and the Apache compression libs and I am unhappy with them for 3 reasons:
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How to run a shell script at startup
... running stop_my_app) I'd have to do so with sudo, no? Also, I'm wondering what exactly is the function of the trailing ampersand(?).
– meetamit
Oct 19 '12 at 14:42
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Calling Java from Python
What is the best way to call java from python?
(jython and RPC are not an option for me).
9 Answers
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CSS opacity only to background color, not the text on it? [duplicate]
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And what happens when you need your #block opac background placement to be determined by your text? For instance: hovering over a promo block brings up text half the size of the promo block. The #block layer won't respond to the ...
How to specify an area name in an action link?
...herwise it will just ignore it... and then will make you wonder four hours what is wrong.. just like me.
– Piotr Kula
May 23 '13 at 14:38
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How to strike through obliquely with css
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And what about all the browsers that don't support CSS3 transforms?
– Mooseman
Jan 29 '13 at 22:54
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How to open the Google Play Store directly from my Android application?
...u may want to use intent.resolveActivity(getPackageManager()) to determine what to do.
– Coda
Aug 4 '16 at 5:56
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Property getters and setters
...properties.
The functionality you want might also be Property Observers.
What you need is:
var x: Int
var xTimesTwo: Int {
set {
x = newValue / 2
}
get {
return x * 2
}
}
You can modify other properties within the setter/getters, which is what they are meant for....